Ilimi

Lokacin da muke watsa sigina, ko siginar gani ne, siginar lantarki, ko siginar mara waya, idan ana watsa ta kai tsaye, siginar yana cikin sauƙi da hayaniya, kuma yana da wahala a sami ingantaccen bayani a ƙarshen karɓar. Domin inganta ikon hana tsoma baki...

Hanyoyin asali na ƙirar dijital na binary sune: Binary amplitude keying (2ASK) - girman canjin siginar mai ɗauka; Binary mitar motsi keying (2FSK) — sauyin mitar siginar mai ɗauka; Binary Phase Shift keying (2PSK) — canjin lokaci na siginar mai ɗauka. Daban-daban lokaci motsi keyin...

Tsarin PON yana ɗaukar fasahar rarraba lokaci-lokaci a cikin hanyar haɗin kai, kuma ONU tana aika bayanai zuwa alkiblar haɗin kai bisa ga tambarin lokaci da OLT ya keɓe. Lokacin da ONU ya fitar da haske ba tare da sanya tambarin lokaci ba, zai ci karo da siginar fitar da wasu akan...

Tare da haɓaka tsarin sadarwa na gani tare da nisa mai tsayi, ƙarfin da ya fi girma, da kuma mafi girman gudu, musamman lokacin da adadin igiyar ruwa guda ɗaya ya samo asali daga 40g zuwa 100g ko ma super 100g, watsawar chromatic, tasirin da ba na layi ba, watsawar yanayin polarization, da sauran tasirin watsawa a ciki. ..

Lambar gano kuskure (lambar rajistan ma'auni): lambar rajistan ma'amala ta ƙunshi rukunin bayanai na n-1 da 1 bit check element. Naúrar bayanin bit N-1 shine ingantaccen bayanai a cikin bayanan da muke aikawa, kuma ana amfani da sashin duban 1-bit don gano kuskure da lambar sakewa. Binciken ban mamaki: idan n...

Sannu, Masu Karatu. A cikin wannan labarin zan tattauna akan OSI-Data Link Layer Error Control tare da bayani. Bari mu fara… Don fahimtar watsawar layin haɗin bayanai bari mu ɗauki misali, idan na'urar tana buƙatar sadarwa tare da na'urar B, hanyar haɗin sadarwa ...